TECHNICAL PUBLICATIONS - Hammerhead …...HG375/HG375AT Operator’s Manual Intended Use Overview - 3 Intended Use HammerHead® winches are intended for pedestrian controlled pipe

TECHNICAL PUBL ICAT IONS

®

Operator'sManual

HG375/HG375AT

Issue 1.0 960-1116Original Instruction

HG375/HG375AT Operator’s Manual

Overview

Chapter Contents

Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 2

Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Equipment Modification . . . . . . . . . . . . . . . . . . . . . . 3

Unit Components Tracked Unit . . . . . . . . . . . . . . . . 4

Unit Components Wheeled Unit . . . . . . . . . . . . . . . 5

Unit Components Skid Unit . . . . . . . . . . . . . . . . . . . 5

Operator Orientation. . . . . . . . . . . . . . . . . . . . . . . . . 6

Operating Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 8

• Bulleted Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

• Numbered Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Overview - 1

HG375/HG375AT Operator’s ManualSerial Number Location

Serial Number Location

Record serial numbers and date of purchase in spaces provided. Winch (2) and engine (1) serial numbers are located as shown.

date of manufacture

date of purchase

winch unit serial number (2)

engine serial number (1)

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2 - Overview

HG375/HG375AT Operator’s ManualIntended Use

Intended Use

HammerHead® winches are intended for pedestrian controlled pipe bursting, pipe slitting, slip lining, and

cable pulling. The HG375 HydroGuide® Winch is a dual capstan design winch with the capacity of utilizing multiple sizes of wire cable. The HG375 provides up to 3.75 tons (3.4 tonnes) of constant tension for pipe bursting, pipe slitting, slip lining, and cable pulling.

The unit is designed for operation in temperatures typically experienced in earth moving and construction work environments. Contact your HammerHead dealer for provisions required for operating in extreme temperatures. Use in any other way is considered contrary to the intended use.

HammerHead pipe bursters and power units should be operated, serviced, and repaired only by persons familiar with their particular characteristics and acquainted with the relevant safety procedures.

Equipment Modification

This equipment was designed and built in accordance with applicable standards and regulations. Modification of equipment could mean that it will no longer meet regulations and may not function properly or in accordance with the operating instructions. Modification of equipment should only be made by competent personnel possessing knowledge of applicable standards, regulations, equipment design functionality/requirements and any required specialized testing.

Overview - 3

HG375/HG375AT Operator’s ManualUnit Components

Unit Components

Tracked Unit

1. Winch

2. Mast

3. Stabilizer

4. ESID driver storage tube*

5. Tracks

6. ESID strobe light*

*Optional

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4 - Overview

HG375/HG375AT Operator’s ManualUnit Components

Wheeled Unit

Skid Unit

1. Winch

2. Mast

3. Stabilizer

4. Hitch

5. Tires



*Optional

1. Winch

2. Mast

3. Stabilizer



*Optional

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3 45 6 7

1 2

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3 4 5

1 2

Overview - 5

HG375/HG375AT Operator’s ManualOperator Orientation

Operator Orientation

Tracked/Skid Unit

1. Front of unit

2. Right side of unit

3. Rear of unit

4. Left side of unit

Wheeled Unit

1. Front of unit

2. Right side of unit

3. Rear of unit

4. Left side of unit

IMPORTANT: Top view of unit is shown.


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6 - Overview

HG375/HG375AT Operator’s ManualOperating Area

Operating Area

Winch

Operator should stand only in the location marked by number 1.

Tracks

Operator should stand only in the location marked by number 1.



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Overview - 7

HG375/HG375AT Operator’s ManualAbout This Manual

About This Manual

This manual contains information for the proper use of this machine. See Operation Overview for basic operating procedures. Cross references such as “See page 50” will direct you to detailed procedures.

Bulleted Lists

Bulleted lists provide helpful or important information or contain procedures that do not have to be performed in a specific order.

Numbered Lists

Numbered lists contain illustration callouts or list steps that must be performed in order.

8 - Overview

HG375/HG375AT Operator’s ManualReporting Safety Defects

Foreword

This manual is an important part of your equipment. It provides safety information and operation

instructions to help you use and maintain your HammerHead® equipment.

Read this manual before using your equipment. Keep it with the equipment at all times for future reference. If you sell your equipment, be sure to give this manual to the new owner.

If you need a replacement copy, contact your HammerHead dealer. If you need assistance in locating a dealer, visit our website at www.hammerheadtrenchless.com or write to the following address:

HammerHead Trenchless Equipment500 South C.P. AvenueLake Mills, WI 53551 USA

The descriptions and specifications in this manual are subject to change without notice. Earth Tool Company LLC reserves the right to improve equipment. Some product improvements may have taken place after this manual was published. For the latest information on HammerHead equipment, see your HammerHead dealer.

Thank you for buying and using HammerHead equipment.

Reporting Safety Defects

If you believe that your vehicle has a defect which could cause a crash or could cause injury or death, you should immediately inform the National Highway Traffic Safety Administration (NHTSA) in addition to notifying The Charles Machine Works, Inc, Attn: Product Safety Coordinator.

If NHTSA receives similar complaints, it may open an investigation, and if it finds that a safety defect exists in a group of vehicles, it may order a recall and remedy campaign. However, NHTSA cannot become involved in any individual problems between you, your Ditch Witch dealer, or The Charles Machine Works, Inc.

To contact NHTSA you may either call the Auto Safety Hotline toll-free at 1-800-424-9393 (366-0123 in Washington, DC area) or write to:

NHTSAU.S. Department of Transportation400 7th Street SW (NSA-11)Washington, DC 20590

You can also obtain other information about motor vehicle safety from the Hotline.

Foreword - 9


HG375/HG375ATOperator’s Manual

Issue number 1.0/OM/09/17

Part number 960-1116

Copyright 2017

by Earth Tool Company LLC

HammerHead®, and HydroBurst® are registered trademarks of Earth Tool Company LLC.

This product and its use may be covered by one or more patents at http://patents.charlesmachine.works.

®

10 - Foreword


Contents

Overviewmachine serial number, information about the type of work this machine is designed to perform, basic machine components, and how to use this manual

1

Forewordpart number, revision level, and publication date of this manual, and factory contact information

9

Safetymachine safety alerts and emergency procedures

13

Controlsmachine controls and indicators and how to use them

23

Prepareprocedures for inspecting and classifying the jobsite, planning the installation, and preparing the jobsite for work

37

Driveprocedures for startup, cold start, driving, and shutdown

51

Transportprocedures for lifting and hauling

57

Burst Pipeprocedures for setting up equipment and performing the pipe replacement

63

Systems and Equipmentbursting string, accessory kit, tooling

75

Complete the Jobprocedures for restoring the jobsite and storing equipment

87

Serviceservice intervals and instructions for this machine including lubrication, replacement of wear items, and basic maintenance

89

Specificationsmachine specifications including weights, measurements, power ratings, and fluid capacities

115

Contents - 11


Supportthe warranty policy for this machine, and procedures for obtaining warranty consideration and training

119

Service Recorda record of major service performed on the machine

121

Appendixadditional information about HammerHead® equipment

123

12 - Contents


Safety

Chapter Contents

Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

California Proposition 65 Warning . . . . . . . . . . . . 14

Emergency Procedures . . . . . . . . . . . . . . . . . . . . . 14

• Electric Strike Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

• If an Electric Line is Damaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

• If a Gas Line is Damaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

• If a Fiber Optic Cable is Damaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

• If Machine Catches on Fire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Safety Alert Classifications . . . . . . . . . . . . . . . . . . 19

Machine Safety Alerts. . . . . . . . . . . . . . . . . . . . . . . 20

Safety - 13

HG375/HG375AT Operator’s Manual Guidelines

Guidelines

When you see this safety alert sign, carefully read and follow all instructions. YOUR SAFETY IS AT STAKE. Read this entire section before using your equipment.

Follow these guidelines before operating any jobsite equipment:

• Complete proper training and read operator’s manual before using equipment.

• Mark proposed path with white paint and have underground utilities located before working. In the USor Canada, call 811 (US) or 888-258-0808 (US and Canada). Also contact any local utilities that do notparticipate in the One-Call service. In countries that do not have a One-Call service, contact all localutility companies to have underground utilities located.

• Classify jobsite based on its hazards and use correct tools and machinery, safety equipment, and workmethods for jobsite.

• Mark jobsite clearly and keep spectators away.

• Wear personal protective equipment.

• Review jobsite hazards, safety and emergency procedures, and individual responsibilities with allpersonnel before work begins. Safety Data Sheets (SDS) are available atwww.hammerheadtrenchless.com/parts & services.

• Fully inspect equipment before operating. Repair or replace any worn or damaged parts. Replacemissing or damaged safety shields and safety signs. Contact your HammerHead dealer for assistance.

• Use equipment carefully. Stop operation and investigate anything that does not look or feel right.

• Do not operate unit where flammable gas may be present.

• Only operate equipment in well-ventilated areas.

• Contact your HammerHead dealer if you have any question about operation, maintenance, orequipment use.

California Proposition 65 Warning

This product may contain chemicals know to the State of California to cause cancer, birth defects, or other reproductive harm.

• battery posts, terminals and related accessories

• engine exhaust

• ethylene glycol

14 - Safety


Emergency Procedures

Before operating any equipment, review emergency procedures and check that all safety precautions have been taken.

Electric Strike Description

When working near electric cables, remember the following:

• Electricity follows all paths to ground, not just path of least resistance.

• Pipes, hoses, and cables will conduct electricity back to all equipment.

• Low voltage current can injure or kill. Many work-related electrocutions result from contact with lessthan 440 volts.

Most electric strikes are not noticeable, but indications of a strike include:

• power outage

• smoke

• explosion

• popping noises

• arcing electricity

If any of these occur assume an electric strike has occurred.

Jobsite hazards could cause death or serious injury. Use correct equipment and work methods. Use and maintain proper safety equipment.

EMERGENCY SHUTDOWN - Turn ignition switch to stop position or push remote engine stop button (if equipped).

Electric shock. Contacting electric lines will cause death or serious injury. Know location of lines and stay away.

Safety - 15

HG375/HG375AT Operator’s Manual Emergency Procedures

If an Electric Line Is Damaged

If you suspect an electric line has been damaged and you are in pit, DO NOT MOVE and DO NOT TOUCH ANYTHING. Remain in pit and take the following actions. The order and degree of action will depend upon the situation.

• Warn people nearby that an electric strike has occurred. Instruct them to leave the area and contactutility.

• Contact utility company to shut off power.

• Do not leave pit until given permission by utility company.

If you suspect an electric line has been damaged and you are out of pit, DO NOT TOUCH ANYTHING. Take the following actions. The order and degree of action will depend upon the situation.

• LEAVE AREA. The ground surface may be electrified, so take small steps with feet close together toreduce the hazard of being shocked from one foot to the other.


• Do not return to jobsite or allow anyone into area until given permission by utility company.

If you suspect an electric line has been damaged and you are on other piece of equipment, DO NOT MOVE. Remain on truck or trailer and take the following actions. The order and degree of action will depend upon the situation.

• Warn people nearby that an electric strike has occurred. Instruct them to leave the area and contactutility.


• Do not return to area or allow anyone into area until given permission by utility company.

16 - Safety


If a Gas Line is Damaged

If you suspect a gas line has been damaged, take the following actions. The order and degree of action will depend on the situation.

• Immediately shut off engine(s), if this can be done safely and quickly.

• Remove any ignition source(s), if this can be done safely and quickly.

• Warn others that a gas line has been cut and that they should leave the area.

• Leave jobsite as quickly as possible.

• Immediately call your local emergency phone number and utility company.

• If jobsite is along street, stop traffic from driving near jobsite.

• Do not return to jobsite until given permission by emergency personnel and utility company.

Fire or explosion possible. Fumes could ignite and cause burns. No smoking, no flame, no spark.

Explosion possible. Serious injury or equipment damage could occur. Follow directions carefully.

Safety - 17

HG375/HG375AT Operator’s Manual Emergency Procedures

If a Fiber Optic Cable is Damaged

Do not look into cut ends of fiber optic or unidentified cable. Vision damage can occur. Contact utility company.

If Machine Catches on Fire

Perform emergency shutdown procedure and then take the following actions. The order and degree of action will depend on the situation.

• Immediately move battery disconnect switch (if equipped and accessible) to disconnect position.

• If fire is small and fire extinguisher is available, attempt to extinguish fire.

If fire cannot be extinguished, leave area as quickly as possible and contact emergency personnel.

18 - Safety

HG375/HG375AT Operator’s ManualSafety Alert Classifications

Safety Alert Classifications

These classifications and the icons defined on the following pages work together to alert you to situations which could be harmful to you, jobsite bystanders or your equipment. When you see these words and icons in the book or on the machine, carefully read and follow all instructions. YOUR SAFETY IS AT STAKE.

Watch for the three safety alert levels: DANGER, WARNING and CAUTION. Learn what each level means.

indicates a hazardous situation that, if not avoided, will result in death or serious injury. This signal word is to be limited to the most extreme situations.

indicates a hazardous situation that, if not avoided, could result in death or serious injury.

indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.

Watch for two other words: NOTICE and IMPORTANT.

NOTICE indicates information considered important, but not hazard-related (e.g., messages relating to property damage).

IMPORTANT can help you do a better job or make your job easier in some way.

Safety - 19

HG375/HG375AT Operator’s ManualMachine Safety Alerts

Machine Safety Alerts

1

Lift point. See Transport chapter for more information.

2

Crushing weight could cause death or serious injury. Stay away.

3

Tiedown location. See Transport chapter for more information.

20 - Safety


4

Fire or explosion possible. Fumes could ignite and cause burns. No smoking, no flame, no spark.

5

Hot parts may cause burns. Do not touch until cool or wear gloves.

6

Moving parts can crush and cut hand or foot. Stay away.

7

Crush hazard. Machine can move during operation. Lower stabilizers and chock wheels or tracks before operating winch.

8

Cable may break while pulling and strike you. Serious injury or death may occur. Stay away.

9


10

Battery acid may cause burns. Avoid contact or wear gloves.

11

Pressurized fluid or air could pierce skin and cause severe injury. Refer to operator’s manual for proper use.

Safety - 21


12


14

Read operator’s manual. Follow safety rules and know how to use all controls. Your safety is at stake.

22 - Safety


Controls

Chapter Contents

Winch Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Track Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Gauges and Indicators . . . . . . . . . . . . . . . . . . . . . . 29

ESID (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Stabilizer Controls . . . . . . . . . . . . . . . . . . . . . . . . . 35

Battery Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . 36

Controls - 23

HG375/HG375AT Operator’s ManualWinch Controls

Winch Controls

1. Auxiliary outlet

2. Pressure adjustment button

3. USB port

4. Remote engine stop button

5. Datalogger

6. Ignition switch

7. Auxiliary light switch

8. Capstan control switch

9. Throttle

10. Winch control lever

11. Cable speed control

12. Pull force control

1

8

9 10 11 12

2 3 4 5

6

7

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Item Description Notes

1. Auxiliary outlet Provides power for other equipment.

Power output is 12VDC, 5A.

2. Pressure adjustment button

To set pulling force to a known value, press.

Use pressure gauge to determine pulling force.

Use with pull force control. See page 27 for more information.

3. USB port Connect printing or storage device to USB port to offload information from Datalogger

4. Remote engine stop button

To shut engine down, press. IMPORTANT: Engine does have an electronic fuel shut off. Pushing the throttle in will not shut down the engine.

5. Datalogger Displays information such as max force, frequency, and distance of job.

Follow on-screen commands to set preferences.

Soft key commands change with each menu screen and are displayed next to the key.

6. Ignition switch To preheat engine, insert key and turn counterclockwise.

To turn electrical system on, but not engine, insert key and turn one position clockwise.

To turn engine on, insert key and turn two positions clockwise.

To turn unit off, turn key to center position.

See page 53 for more information.

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Controls - 25


7. Auxiliary light switch To turn lights on, move up.

To turn lights off, move down.

Controls lights on unit, including dash light and work light.

8. Capstan control switch To select high for capstan drive motor, move up.

To select low for capstan drive motor, move down.

IMPORTANT: To achieve maximum pull force switch must be in the low speed.

9. Throttle To decrease engine speed, press center button and push knob in.

To increase engine speed, press center button and pull knob out.

To increase engine speed with fine adjustments, turn knob counterclockwise.

To decrease engine speed with fine adjustments, turn knob clockwise.

To lock throttle into place, turn base ring clockwise.

To unlock throttle settings, turn base ring counterclockwise.

IMPORTANT:

• Pushing throttle adjustment control all the way in does not stop the engine.

• Throttle is to be run at maximum speed during operation of winch. Cable pullback speed is adjusted with the cable speed adjustment control. See “Cable speed control” on page 27.


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26 - Controls


10. Winch control lever To push cable out, move lever to the left.

To put winch in neutral, move lever to center position.

To pull cable in, move lever to the right.

NOTICE: Lever will remain engaged until moved to other position.

IMPORTANT: Cable will push out or pull in at any engine speed.

11. Cable speed control To increase speed while pulling cable in, turn knob to the right.

To decrease speed while pulling cable in, turn knob to the left.

IMPORTANT: There is a minimum setting that needs to be achieved before cable will start to move.

12. Pull force control To increase pull force, turn knob to the right.

To decrease pull force, turn knob to the left.

IMPORTANT:

• There is a minimum setting that needs to be achieved before cable will start to move.

• Use with pressure adjustment button. See page 25 for more information.


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Controls - 27

HG375/HG375AT Operator’s ManualTrack Controls

Track Controls

1. Left track control 2. Right track control


1. Left track control To move left track forward, move lever forward.

To move left track backward, move lever back.

2. Right track control To move right track forward, move lever forward.

To move right track backward, move lever back.

1 2

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28 - Controls

HG375/HG375AT Operator’s ManualGauges and Indicators

Gauges and Indicators

1. Hydraulic fluid temperature indicator

2. Hydraulic fluid filter restriction indicator

3. Cold start wait indicator

4. Engine oil pressure indicator

5. High temperature indicator

6. Voltage indicator

7. Hydraulic pressure gauge

8. Fuel gauge

9. Hourmeter


1. Hydraulic fluid temperature indicator

Lights red when hydraulic fluid is overheating.

NOTICE: If indicator lights, stop engine and service unit.

1

2

3

4

5 6 7 8 9

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Controls - 29


2. Hydraulic fluid filter restriction indicator

Lights yellow when hydraulic fluid filter flow is restricted.

NOTICE: If indicator lights, stop engine and service unit.

3. Cold start wait indicator Lights yellow when engine preheater (glow plug) is on.

Wait until light goes off before starting engine.

4. Engine oil pressure indicator

Lights red when engine oil pressure is low.

NOTICE:

• If engine pressure is too low the unit will shut down in 15 seconds.

• Check engine oil level.

5. High temperature indicator

Lights red when engine is overheating.

NOTICE: If engine temperature is too high the unit will shut down in 15 seconds.


30 - Controls


6. Voltage indicator Lights red when alternator is not charging.

7. Hydraulic pressure gauge

Displays hydraulic pressure for unit.

In neutral the gauge readings should be approximately 0-300 psi (0-20 bar).

When operating the gauge readings can be up to approximately 3500 psi (241 bar).

8. Fuel gauge Displays fuel level in tank.

9. Hourmeter Displays engine operating time.

Use engine operating time to schedule service.


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Controls - 31

HG375/HG375AT Operator’s ManualElectric Strike System* (ESID)

Electric Strike System* (ESID)

1. LCD display

2. Electrical power supply indicator

3. ESID OK indicator

4. Strike indicator

5. Voltage limiter problem indicator

6. Current detection problem indicator

7. ESID Alarm interrupt button

8. ESID Self test button


1. LCD display Displays the amount of current and voltage being detected as a percentage of a strike condition.

Displays status icons during certain error conditions.

The line with the “V” shows voltage reading and the line with the “A” shows current reading.

11

22

33

44

66

55

7788

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32 - Controls


2. Electrical power supply indicator

Green light means control box has sufficient electrical power for operation.

Strike system is ready to operate if OK indicator is also on.

3. ESID OK indicator Green light indicates ESID self test reports no problems.

4. Strike indicator The indicator bubbles are filled as strike percent readings increase.

A filled indicator bubble in the triangle represents a strike warning condition and will trigger the alarm(s) and strobe(s).

NOTICE: The ESID does not indicate proximity to electric lines. System will activate only when voltage and/or amperage detected at the drilling unit are above threshold minimum limits.

Remember that the system can go from one or two indicator bubbles to an electric strike immediately.

5. Voltage limiter problem indicator

Blinking red light indicates a problem has been detected in the voltage limiter circuit.

See “Troubleshoot Strike System” on page 82.


Controls - 33


*Optional

6. Current detection problem indicator

Blinking red light indicates a problem has been detected in the current sensing circuit.

See “Troubleshoot Strike System” on page 82.

7. ESID alarm interrupt button

To turn off strike alarm at drilling unit, press.

8. ESID self test button To start a manual self test, press.

To reset the system after a strike has been detected, press and hold.

IMPORTANT:

• Self-test checks all systems and circuits except voltage limiter.

• See “If an Electric Line is Damaged” on page 18.


34 - Controls

HG375/HG375AT Operator’s ManualStabilizer Controls

Stabilizer Controls

1. Rear stabilizers

2. Manual stabilizer handle (skid unit only)

3. Manual trailer jack handle (wheeled unit only)


1. Rear stabilizers Pull down and secure with pins.

2. Manual stabilizer handle (skid unit only)

Turn handle clockwise to lower stabilizer.

Turn handle counterclockwise to raise stabilizer.

3. Manual trailer jack handle (wheeled unit only)

Turn handle clockwise to lower front of trailer.

Turn handle counterclockwise to raise front of trailer.

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Controls - 35

HG375/HG375AT Operator’s ManualBattery Disconnect

Battery Disconnect


Battery disconnect switch To connect, move right.

To disconnect, move left.

NOTICE:

• Do not operate battery disconnect switch with engine running.

• To avoid equipment damage, wait two minutes after turning engine off before disconnecting battery.

36 - Controls


Prepare

Chapter Contents

Gather Information . . . . . . . . . . . . . . . . . . . . . . . . . 38

• Review Job Plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

• Notify One-Call Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

• Examine Pullback Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

• Arrange for Traffic Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

• Plan for Emergency Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Inspect Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

• Identify Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

• Select Installation and Bursting Pit Locations . . . . . . . . . . . . . . . . . . . .40

Classify Jobsite. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

• Select Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

• Apply Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Plan Pull Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Prepare Jobsite . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

• Mark Pull Path. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

• Dig Bursting Pit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Check Supplies and Prepare Equipment . . . . . . . 47

• Check Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

• Prepare Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48

• Assemble Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49

Prepare - 37

HG375/HG375AT Operator’s ManualGather Information

Gather Information

A successful job begins before the pull. The first step in planning is reviewing information already available about the job and jobsite.

Review Job Plan

Review blueprints or other plans and make sure you have taken enlargement during pullback into account. Check for information about existing or planned structures, elevations, or proposed work that may be taking place at the same time.

Notify One-Call Services

Mark proposed path with white paint and have underground utilities located before working.

• In the US or Canada, call 811 (US) or 888-258-0808 (US and Canada). Also contact any local utilities that do not participate in the One-Call service.

• In countries that do not have a One-Call service, contact all local utility companies to have underground utilities located.

Examine Pullback Material

Ask for a sample of the new product material you will be pulling back. Check its weight and stiffness. Contact the manufacturer for bend radius information. Check that you have appropriate pullback devices.

Arrange for Traffic Control

If working near a road or other traffic area, contact local authorities about safety procedures and regulations.

Plan for Emergency Services

Have the telephone numbers for local emergency and medical facilities on hand. Check that you will have access to a telephone.

38 - Prepare

HG375/HG375AT Operator’s ManualInspect Site

Inspect Site

Identify Hazards

Inspect jobsite before transporting equipment. Check for the following:

• overall grade or slope

• changes in elevation such as hills or open trenches

• obstacles such as buildings, railroad crossings, or streams

• signs of utilities

– “buried utility” notices

– utility facilities without overhead lines

– gas or water meters

– junction boxes

– drop boxes

– light poles

– manhole covers

– sunken ground

• traffic

• access

• soil type and condition

• depths of existing pipes

Have an experienced locating equipment operator sweep area within 20’ (6 m) to each side of burst path to verify previously marked line and cable locations. Mark location of all buried utilities and obstructions.

Prepare - 39

HG375/HG375AT Operator’s ManualInspect Site

Select Installation and Bursting Pit Locations

Consider the following when selecting pit locations:

Slope

Unit should be parked on a level site. Consider how slope will affect unit setup and operation. Assess the risks on each slope to determine if factors affecting risks create an unsafe condition for pipe bursting.

Traffic

Vehicle and pedestrian traffic must be a safe distance from pulling equipment. Allow at least 10’ (3 m) buffer zone around equipment.

Space

Check that starting and ending points allow enough space for installation and bursting pits. See “Dig Bursting Pit” on page 45.

Check that installation area has enough space for product to be installed.

Check that there is enough space to work.

Access

Consider shade, wind, fumes, and other site features.

40 - Prepare

HG375/HG375AT Operator’s ManualClassify Jobsite

Classify Jobsite

Select a Classification

Jobsites are classified according to underground hazards present.

Jobsite hazards could cause death or serious injury. Use correct equipment and work methods. Use and maintain proper safety equipment. 274-050; 274-724 (2P)

To help avoid injury:

• Wear personal protective equipment including hard hat, safety eye wear, and hearing protection.

• Do not wear jewelry or loose clothing.

• Mark proposed path with white paint and have underground utilities located before working.

• Comply with all utility notification regulations before digging or drilling.

• Verify location of previously marked underground hazards.

• Mark jobsite clearly and keep spectators away.

Remember, jobsite is classified by hazards in place -- not by line being installed.

If working . . . then classify jobsite as . . .

within 10’ (3 m) of a buried electric line electric

within 10’ (3 m) of a natural gas line natural gas

in concrete, sand, or granite which is capable of producing crystalline silica (quartz) dust

crystalline silica (quartz) dust

within 10’ (3 m) of any other hazard other

NOTICE: If you have any doubt about jobsite classification, or if jobsite might contain unmarked hazards, take steps outlined previously to identify hazards and classify jobsite before working.

Prepare - 41


Apply Precautions

Once classified, precautions appropriate for jobsite must be taken. Follow U.S. Department of Labor regulations on excavating and trenching (Part 1926, Subpart P) and other similar regulations.

Electric Jobsite Precautions

Use one or both of these methods.

• Expose line by careful hand digging or soft excavation.

• Have service shut down while work is in progress. Have electric company test lines before returning them to service.

Natural Gas Jobsite Precautions

Position equipment upwind from gas lines and use one or both of these methods.

• Expose lines by careful hand digging or soft excavation.

• Have gas shut off while work is in progress. Have gas company test lines before returning them to service.

Electric shock will cause death or serious injury. Stay away. 274-049

Fire or explosion possible. Fumes could ignite and cause burns. No smoking, no flame, no spark. 275-419 (2P)

42 - Prepare


Crystalline Silica (Quartz) Dust Precautions

Crystalline silica dust is a naturally occurring substance found in soil, sand, concrete, granite, and quartz. Breathing silica dust particles while cutting, drilling, or working materials may cause lung disease or cancer. To reduce exposure:

• Use water spray or other means to control dust.

• Refer to U.S. Department of Labor Occupational Safety and Health Administration guidelines to learn more about appropriate breathing protection and permissible exposure limits.

Other Jobsite Precautions

You may need to use different methods to safely avoid other underground hazards. Talk with those knowledgeable about hazards present at each site to determine which precautions should be taken or if job should be attempted.

Breathing crystalline silica dust may cause lung disease. Cutting, drilling, or working materials such as concrete, sand, or rock containing quartz may result in exposure to silica dust. Use dust control methods or appropriate breathing protection when exposed to silica dust.


• Use water spray or other means to control dust.

• Refer to U.S. Department of Labor Occupational Safety and Health Administration guidelines to learn more about appropriate breathing protection and permissible exposure limits.

Prepare - 43

HG375/HG375AT Operator’s ManualPlan Pull Path

Plan Pull Path

Plan the pull path, from entry to end, before job begins. Locate the entire route of the pipe to be replaced to ensure a straight path. Expose all crossing or parallel utilities in accordance with local regulations.

Prepare Jobsite

Mark Pull Path

Mark your planned pull path with white flags or paint.



• If jobsite classification is in question or if the possibility of unmarked electric utilities exists, classify jobsite as electric.

• Cutting high voltage cable can cause electrocution. Expose lines by hand before digging.

• All vegetation near operator’s station must be removed. Contact with trees, shrubs, or weeds during electrical strike could result in electrocution.

44 - Prepare

HG375/HG375AT Operator’s ManualPrepare Jobsite

Dig Bursting Pit

Standard Mast

Standard mast unit is designed to be deployed in a manhole. If not using in a manhole refer to the pit dimensions below.

Minimum Bursting Pit

Length (A) Width (B)

U.S. (metric) U.S. (metric)

10.1” (25.7 cm) 9.8” (24.9 cm)

Centerline of cable is 5.1” (13 cm) above the bottom plate (C).

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Prepare - 45

HG375/HG375AT Operator’s ManualPrepare Jobsite

Slitting Lower Unit (SLU)

Minimum Bursting Pit

Length (A) Width (B)

U.S. (metric) U.S. (metric)

38.4” (97.5 cm) 16” (40.6 cm)

Centerline of cable is 5.2” (13.2 mm) above the bottom plate (C).

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46 - Prepare

HG375/HG375AT Operator’s ManualCheck Supplies and Prepare Equipment

Requirements

Installation Pit (1)

• Pit dimensions depend on pipe depth and product being installed.

• Must be in line with existing pipe.

• Sloped back end aids new product installation. Consider new product bend radius.

Bursting Pit (2)

• Must accommodate the length and angle of the standard mast unit or SLU.

Check Supplies and Prepare Equipment

Check Supplies

• marking flags or paint

• fuel

• hydraulic oil

• keys

• cutting heads, clevis

• barrier cones and tape

• Wire cable (See “Wire Cable” on page 77.)

• personal protective equipment, such as hard hat and safety glasses

• notepad and pencil

NOTICE: Follow U.S. Department of Labor regulations on excavating and trenching (Part 1926, Subpart P) and other similar regulations.

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Prepare - 47


Prepare Equipment

Install Wire Cable

1. Support shipping reel so it turns freely as it unwinds the wire cable to prevent kinking.

2. Securely wrap end of wire cable to prevent fraying.

3. Remove bolts securing shield to expose the bull wheels (3).

4. Route wire cable through sheaves (1, 2).

5. Loop wire cable around bottom bull wheel (3) and over top bull wheel.

6. Continue this process until all slots on bull wheels have been used.

7. Thread end of cable through level wind system (6) and around sheave (4/7). Secure to take up drum (5) using cable clamp supplied.

8. Wrap one complete wrap of cable onto the take up drum.

9. Set the start position of the second wrap on drum between 12:00 (8) and 1:00 (9).

10. Install drive chain from drum assembly to level wind assembly with tension set to the bottom side of the sprockets.

11. Hammer over the first wrap to close the gap between the first cable wrap and the drum plate.

12. Wrap the next two to three consecutive wraps of cable and hammer over to close gaps between cables and the drum plate.

13. Load the rest of the cable to the drum assembly.


To help avoid injury: Install wire cable with engine off.

IMPORTANT: If wire cable is not installed correctly the brake will not hold the load.

IMPORTANT: It may be necessary to remove the shields on both sides of the capstans while installing cable.

IMPORTANT: Do not operate winch with less than five full cable wraps on the drum.

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48 - Prepare


Fluid Levels

• fuel

• hydraulic fluid

• engine coolant

• engine oil

Condition and Function

• all controls

• filters

• couplers

• tracks or tires

• hoses and valves

Assemble Accessories

Fire Extinguisher

If required, mount a fire extinguisher near the power unit but away from possible points of ignition. The fire extinguisher should always be classified for both oil and electric fires. It should meet legal and regulatory requirements.

Improper control function could cause death or serious injury. If control does not work as described in instructions, stop machine and have it serviced.

Prepare - 49


50 - Prepare


Drive

Chapter Contents

Start Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Steer Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

• Tips to Reduce Track Wear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

• Safe Slope Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Shut Down Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Drive - 51

HG375/HG375AT Operator’s ManualStart Unit

Start Unit

Before operating machine, read engine manufacturer’s starting and operating instructions.

1. Ensure winch control lever is in neutral

2. Set Throttle at 1/8 to 1/4 throttle.

3. Press pressure adjustment button to decrease pressure.

4. Turn ignition switch to the run position (key on, engine off). Cold start indicator will light if necessary.

5. When cold start wait indicator turns off, turn ignition switch clockwise to start machine.

6. Run engine at half throttle or less for five minutes before operating machine. Ensure all controls function properly.

Read operator’s manual. Follow safety rules and know how to use all controls. Your safety is at stake.


• Wear hard hat, safety glasses, and other protective equipment required by job. Do not wear jewelry or loose clothing that can catch on controls.

• Clear the area around the machine of all bystanders.

Fire or explosion possible. Do not use starter fluid. 273-459 (2P), 274-206 (2P), 700-206 (2P)

NOTICE: If engine turns but does not start within 20 seconds, allow starter to cool one minute before trying to start again.

52 - Drive

HG375/HG375AT Operator’s ManualSteer Unit

Steer Unit

To steer winch unit, follow instructions for type of steering desired. See page 28 for more information.

To steer while moving forward, move one control slightly more than the other to turn in the desired direction. Winch unit will gradually turn to left or right.

To steer while moving backward, move one control slightly more than the other to turn in the desired direction. Winch unit will gradually turn to left or right.

For tight steering at low speed, move one control to reverse and one control to forward to turn in the desired direction. Tracks will counter-rotate and turn winch unit in a tight circle.

Tips to Reduce Track Wear

Rubber tracks are best suited at soil-based job sites with minimal rock and debris. Sharp objects such as gravel, steel shards, and broken concrete will damage rubber tracks and undercarriage components. Excessive operation on concrete or asphalt will shorten track life. When storing your machine, keep tracks away from rain and direct sunlight.

Wash tracks daily to remove foreign objects and abrasive soil from sprockets and idler rollers. Drive slowly and make wide turns when possible. Regularly check undercarriage components (sprocket, rollers, idler) for wear and damage. Maintain proper track tension. See “Check Track Tension and Condition (Tracked Unit)” on page 98.

To prevent premature wear, avoid the following:

• Spinning tracks under heavy load.

• Turning on sharp objects such as stones, stumps and debris.

• Quick turns or “spin” turns on asphalt or concrete.

• Driving over curbs, ledges, and sharp objects.

• Driving with sidewall edges pressed against hard walls, curbs or other objects.

• Driving on slopes.

• Operating on corrosive materials such as salt or fertilizer. Wash immediately.

IMPORTANT: These steer instructions cover the tracked unit only.

Drive - 53

HG375/HG375AT Operator’s ManualSteer Unit

Safe Slope Operation

Operating safely on a slope depends upon many factors including:

• Distribution of machine weight (weight of machine may change due to configuration)

• Even or rough ground conditions

• Potential for ground giving way causing unplanned tilt forward, reverse or sideways

• Nearness of ditches, ruts, stumps or other obstructions and sudden changes in slope

• Speed

• Turning

• Operator skill

Tipover possible. Machine can tip over and crush you.


• Always operate from the uphill side of the unit.

• Drive cautiously at all times.

• Do not drive across slopes.

• Never jerk control levers. Use a steady even motion.

• Do not park machine on slope without returning all controls to neutral position, shutting down machine, and blocking tracks.

54 - Drive

HG375/HG375AT Operator’s ManualShut Down Unit

Shut Down Unit

1. Return winch controls switches to neutral.

2. Reduce engine speed to idle.

3. Turn ignition key to off position.

4. Lower rear stabilizers to the ground and secure with pin.

5. Lower manual stabilizer/manual trailer jack if equipped.

6. For maintenance or long-term storage, turn battery disconnect switch to the OFF position.

NOTICE: To avoid equipment damage, wait two minutes after turning engine off before disconnecting battery.

Drive - 55

HG375/HG375AT Operator’s ManualShut Down Unit

56 - Drive


Transport

Chapter Contents

Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

• Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

• Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Haul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

• Wheeled Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

• Tracked Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

Retrieve Tracked Unit . . . . . . . . . . . . . . . . . . . . . . . 62

Transport - 57

HG375/HG375AT Operator’s ManualLift

Lift

Points

Lifting points are identified by lifting decals. Lifting at other points is unsafe and can damage machinery.

Procedure

Tracked Unit

Use equipment capable of supporting the unit's size and weight. See “Specifications” on page 115 or measure and weigh equipment before lifting.



• Use appropriate lifting device and lifting equipment.

• Use only approved lifting points.

• Stay away from lifted load.

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58 - Transport

HG375/HG375AT Operator’s ManualLift

Wheeled Unit


Skid Unit


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Transport - 59

HG375/HG375AT Operator’s ManualHaul

Haul

Wheeled Unit

Inspect Unit

• Check hitch for wear and cracks. Lubricate if needed.

• Check battery for 12 volt charge.

• Inspect lights for cleanliness and correct operation. Inspect reflectors and replace if needed.

• Check tire pressure. Check lug nut torque with a torque wrench.

Hitch Unit

1. Back tow vehicle to winch unit.

2. Put manual transmission into first or reverse gear or automatic transmission into park. Turn off ignition. Set parking brake.

3. Lower hitch over the ball of the tow vehicle.

4. Connect safety chains to tow vehicle chain keepers (cross-shaped slots on bumper of tow vehicle). Attach left chain to right side of tow vehicle and vice versa to cradle hitch. Connect breakaway switch cable to tow vehicle. Do not connect to hitch or hitch ball.

5. Attach breakaway cable to the towing vehicle bumper or frame.

6. Plug trailer electrical connector into tow vehicle connector.

7. Use jack crank to raise jack base and stow.

8. Remove wheel blocks.

Unhitch Unit

1. Stop tow vehicle and trailer on level ground.

2. Put manual transmission into first or reverse gear or automatic transmission into park. Turn off ignition. Set parking brake.

3. Block trailer wheels.

4. To unhitch trailer from tow vehicle, reverse “Hitch Unit” steps.


IMPORTANT: If your towing vehicle is equipped with an electric brake controller, it must be capable of automatic and manual brake application. Do not use a brake controller that is a manually operated controller only. If your towing vehicle is equipped with a manually operated controller only, remove it and install one that can be applied both automatically and manually.

60 - Transport

HG375/HG375AT Operator’s ManualHaul

Tracked Unit

Load Unit

1. Stow mast in horizontal position.

2. Start unit. See “Steer Unit” on page 53.

3. Raise stabilizers.

4. Move winch to rear of trailer and align with ramps.

5. Ensure engine is at full throttle and slowly drive unit onto trailer.

6. Lower stabilizers to trailer floor.

7. Stop engine when unit is safely positioned on trailer bed.

8. Attach tiedowns to winch where indicated on “Procedure” on page 61.

Tie Down Unit

Points

Tiedown points are identified by tiedown decals. Securing to trailer at other points can damage machinery.

Procedure

To tie down unit, use D-rings shown.

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Transport - 61

HG375/HG375AT Operator’s ManualRetrieve Tracked Unit

Unload Unit

1. Lower ramps.

2. Remove tiedowns.


4. Raise stabilizers.

5. Ensure engine is at full throttle and slowly back unit down trailer or ramps.

Retrieve Tracked Unit

Under normal conditions, winch should not be towed. If unit breaks down and retrieval is necessary:

• tow for short distances at less than 1 mph (1.6 kph),

• use maximum towing force of 1.5 times unit weight,

• use towing chains appropriately rated for maximum towing force,

• attach chains to indicated tow points facing towing vehicle.

To attach chains to tow points, determine which points are facing towing vehicle.

Loop chains around crossmember (either front or back) on winch frame.

Crushing weight could cause death or serious injury. Use proper procedures and equipment or stay away.


• Load and unload trailer on level ground.

• Ensure trailer wheels are blocked.

• Attach trailer to vehicle before loading or unloading.

IMPORTANT: When hydraulics are disengaged, unit has brakes.

62 - Transport


Burst Pipe

Chapter Contents

Set Up and Configure . . . . . . . . . . . . . . . . . . . . . . . 64

• Set Up Mast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Push Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Connect Tooling . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

• Same Path™ Pipe Slitting Technology . . . . . . . . . . . . . . . . . . . . . . . . . .69

Pull New Product . . . . . . . . . . . . . . . . . . . . . . . . . . 70

• Same Path Pipe Slitting Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Finish Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 72

• Remove Tooling Head. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

• Remove Mast from Pit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

Burst Pipe - 63

HG375/HG375AT Operator’s ManualSet Up and Configure

Set Up and Configure

1. Position winch unit outside of bursting pit with winch bumper approximately 4-6 in (100-150 mm) inside the edge of bursting pit or manhole.

2. Lower manual stabilizer/manual trailer jack if equipped and disconnect from towing vehicle.

3. Lower rear stabilizers in the desired location.

1. Tooling head

2. Wire cable

3. Winch

NOTICE: Follow U.S. Department of Labor regulations on excavating and trenching (Part 1926, Subpart P) and other similar regulations.

NOTICE: If stabilizers are lowered on unstable ground place steel road plate under stabilizers.

Crushing weight could cause death or serious injury. Use proper procedures and equipment or stay away..

To help avoid injury: Ensure no personnel are in the pit as equipment is lowered.

3

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64 - Burst Pipe


Set Up Mast

Standard Mast

1. Remove mast from storage position.

2. Attach mast (2) to sheave (3) of winch unit.

3. Secure with pins (1).



• Keep hands and fingers clear of the mast.

• Ensure no personnel are in the pit as equipment is lowered.

• Keep winch doors closed during operation.

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Burst Pipe - 65



1. Remove mast from storage position. Insert pin (1).

2. Slide mast to desired position and pivot bottom part of mast up.

3. Attach mast to sheave of winch unit using pin (3).

4. Remove pin (2).

5. Slide mast down to desired depth and secure with pin (4).

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66 - Burst Pipe


Position Downhole Unit Legs

1. Ensure there is slack in cable before positioning downhole unit.

2. Use stabilizers to fine tune the downhole unit up or down from the centerline of the existing utility.

3. Remove pins (1) securing the downhole unit legs (3) in the up position.

4. Fold legs down and reinstall the pins to lock the legs in the down position.

5. Remove pins (2) to extend legs to face wall.

6. Reinsert pins to lock legs into the extended position.

7. Move the mode selection switch to the neutral position.

Install Slitting Lower Unit (SLU) (Optional)

Remove Downhole Unit

1. Remove four pins (3) to remove downhole unit legs (5) from leg extensions (4).

2. Remove bolts (2) and nuts (1) holding leg extensions in place.

3. Remove leg extensions.

Install SLU

1. Install SLU leg extensions (4) using bolts (2) and nuts (1).

2. Install SLU leg assembly (5) in SLU leg extensions using pins (3).

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Burst Pipe - 67

HG375/HG375AT Operator’s ManualPush Cable

Position SLU Legs

1. Ensure there is slack in wire cable before adjusting SLU legs.

2. Use stabilizers to fine tune the SLU up or down from the centerline of the existing utility.

3. Remove pins (3) to extend legs to face wall.

4. Reinsert pins to lock legs into the extended position.

5. If needed, position intermediate plate (6) to resist host pipes while pulling new product.

6. Move the mode selection switch to the neutral position.

Push Cable

• Start unit. See “Steer Unit” on page 53.

• Use control panel to push cable into existing utility.

IMPORTANT: Intermediate plate can be used with or without reverse blade to slit host pipes.

Read operator’s manual. Know how to use all controls. Your safety is at stake.


• Maintain 2-way communication between bursting pit and all other personnel.

• Make sure all personnel are clear of moving parts.

• Do not attempt to use any part of body to assist wire cable entering/exiting bursting unit.


IMPORTANT:

• It is necessary to apply tension to winch cable to push cable.

• It is not necessary to stop winch when the cable is not being pulled. When cable is relaxed the cable will stop pushing out even though the capstan continues to turn.

68 - Burst Pipe

HG375/HG375AT Operator’s ManualConnect Tooling Head

Connect Tooling Head

Same Path™ Pipe Slitting Technology

1. Shut down unit. See “Shut Down Unit” on page 55.

2. Thread wire cable (1) through blade set (2) and expander (3).

3. Slide jaws (4) onto wire cable and allow 1/4” (6.35 mm) of wire cable to extend past the jaws.

4. Pull jaws into the expander.

5. Attach swivel (5) to the wire cable.

6. Tighten swivel in the expander.

7. Attach swivel to pipe puller (6).







IMPORTANT: See “Same Path™ Pipe Slitting Technology” on page 76 for more information.

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Burst Pipe - 69

HG375/HG375AT Operator’s ManualPull New Product

Pull New Product

1. Ensure winch control lever is in neutral.


3. Move winch control lever to pull cable in.

4. Pull in a small amount of cable and check cable wrap on drum.





• Keep personnel at the proper operating area. See “Operating Area” on page 7.

• Keep hands and feet away.


• Use winch for pipe bursting only.


Cable may break while pulling and strike you. Serious injury or death may occur. Stay away.

Sudden cable movement can cause serious injury or death. Stay clear.

70 - Burst Pipe

HG375/HG375AT Operator’s ManualPull New Product

5. Pull in cable at approximately 1500 lb (608 kg) of pull.

6. Set pressure to approximately 1000 psi (69 bar) and start to winch the tooling and pipe assembly into the installation pit aligning the tooling string with the mouth of the existing pipe.

7. While winching the new pipe into the entrance pit, inspect the legs, feet and position of the mast.

8. When the tooling string is in the old line, start the winch.

9. Once winch is started, pressure can be increased to the desired tonnage.

10. Continue to pull wire cable into pit until all new product is installed.

11. Connect both ends of new product to existing pipe to complete job.

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Burst Pipe - 71

HG375/HG375AT Operator’s ManualFinish Installation

Finish Installation

Remove Tooling Head

1. Shut down unit. See “Shut Down Unit” on page 55.

2. Remove pipe puller from swivel.

3. Remove wire cable from jaws and pull out of the blade set and expander.

Remove Mast from Pit

Standard Mast

1. Remove pins (1).

2. Remove mast (2) from sheave (3) of winch unit.

3. Replace mast in storage position.

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72 - Burst Pipe



1. Secure legs....

2. Slide mast upward and secure with pin (1).

3. Secure mast with pin (2).

4. Remove pin (3) to detach mast from winch unit sheave.

5. Pivot bottom part of mast into the position shown.

6. Remove pin.

7. Slide mast into the storage position.

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Burst Pipe - 73


74 - Burst Pipe


Systems and Equipment

Chapter Contents

Same Path™ Pipe Slitting Technology . . . . . . . . . 76

Slitting Lower Unit (SLU) . . . . . . . . . . . . . . . . . . . . 76

Wire Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

• Maintaining Wire Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

Electric Strike System . . . . . . . . . . . . . . . . . . . . . . 78

• FCC Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

• Assemble Voltage Detector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

• Assemble Grid Mat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79

• Test Strike System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

• ESID Diagnostic Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80

• Troubleshoot Strike System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82

• Use Electric Strike Simulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84

Systems and Equipment - 75

HG375/HG375AT Operator’s ManualSame Path™ Pipe Slitting Technology

Same Path™ Pipe Slitting Technology

The tooling is used when installing polyethylene and high-density polyethylene pipe.


The SLU is used for gas line slitting applications with the Same Path Pipe Slitter Technology.

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76 - Systems and Equipment

HG375/HG375AT Operator’s ManualWire Cable

Wire Cable

Maintaining Wire Cable

For maximum wire cable life:

• Install wire cable properly.

• Do not use over-sized wire cable.

• Keep wire cable protected from the elements.

• Keep wire cable from kinking.

• Do not over-stress wire cable.

• Only use wire cable for the specified job.

Wire Cable Length

cable, swaged 5/16” 1500’ (457.2 m) 2000’ (609.6 m) 2500’ (762 m) 3280’ (1000 m)

cable, 3/8” 1500’ (457.2 m) 2000’ (609.6 m) 2500’ (762 m) 3280’ (1000 m)

cable, 10 mm up to 1000 m (3280’)

Incorrect procedures could result in death, injury, or property damage. Learn to use equipment correctly.


• Replace damaged wire cable immediately. Obvious damage includes permanent bends, flat spots, worn spots, broken wires, frays, rust, and corrosion.

• Inspect button end of the cable before each use.


HG375/HG375AT Operator’s ManualElectric Strike System (ESID)

Electric Strike System (ESID)

Any time you burst pipe in an electric jobsite, electric strike system must be properly set up, tested, and used. You must wear protective boots and gloves meeting the following standards:

• Boots must have high tops and meet the electric hazard protection requirements of ASTM F2413 or ASTM F1117when tested at 18,000 volts. Tuck legs of pants completely inside boots.

• Gloves must have 17,000 AC maximum use voltage, according to ASTM specification D120.

If working around higher voltage, use gloves and boots with appropriately higher ratings.

Read and follow “Prepare Jobsite” on page 44. Review safety procedures before each job.

If an electric strike occurs, immediately contact your local HammerHead® dealer to have the electric strike system tested.

FCC Statement

The Electric Strike System has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, can cause harmful interference to radio communications. Operation of this equipment in a residential area could cause harmful interference which the user will be required to correct at his own expense.

Changes or modifications not expressly approved in writing by The Charles Machine Works, Inc. may void the user's authority to operate this equipment.

NOTICE: The strike system does not prevent electric strikes or detect strikes before they occur. If alarms are activated, a strike has already occurred and equipment is electrified.



Assemble Voltage Detector

1. Drive voltage stake into ground at least 6’ (2 m) away from any part of system.

2. Clip voltage limiter to voltage stake.

Assemble Grid Mat

1. Remove mat from storage.

2. Place mat next to operator’s station.

3. Connect bonding cables to grid mats.

4. Remove ground rod located in storage tube. See “Unit Components” on page 4.

5. Drive ground rod into soil near grid mat using driver located in storage tube.

6. Move cords and cables under grid mat.

7. Connect ground cable clamp to ground rod.



Test Strike System

If system fails any part of this test, see “Troubleshoot Strike System” on the following page. Do not winch until test is completed successfully.

1. Turn on unit. See “Steer Unit” on page 53.

2. ESID control module will perform internal tests which check everything but alarms and strobe.

3. If green ESID okay indicator and electrical power supply indicator lights remain on, press self test button to perform a self test. During this test:

• All lights should glow.

• Alphanumeric readout should display numbers.

• Alarms and strobes on all connected units should sound.

4. If this test is successful, ESID OK indicator and electrical power supply indicator lights will remain on.

5. Use Electric Strike Simulator to test voltage and current sensors. See page 84.

ESID Diagnostic Codes

When strike system detects a problem, an error code will be displayed. Anytime this happens, press self-test button to retest. If error code is still displayed and does not appear in this chart, have control module checked or replaced.

Code Display Condition Result

502 2.5V REF 2.5V reference error in ESID Internal reference failure, ESID may not give valid readings

503 -5V REF -5V reference error in ESID internal reference failure, ESID may not give valid readings

504 CLK RESP clock response error clock my not be working

505 LCD RESP LCD response error LCD display my not work

506 LED RESP LED response error LED display my not work

507 LCD CONTR LCD contrast error LCD contrast not saved properly

508 COP RESET cop watchdog error processor has reset, unknown status of ESID code

510 STRB DVR strobe driver output error strobe may not function

511 HORN DVR horn driver output error horn may not function

512 BAT POWER battery power/horn driver error strike hold on power may not function

513 TEST WIRE no continuity on test wire for testing ESID

information center may not be able to reset ESID

515 STR VOLT strike voltage input error



516 STR COIL strike current input error

517 POST AC V self-test ac voltage input error self-test of ac voltage stake failed

518 POST AC I self-test ac current input error self-test of ac current coil failed

519 POST CD V self-test dc voltage input error self-test of dc voltage input amplifier failed

520 POST DC I self-test dc current input error self-test of dc current input amplifier failed

521 V NOT GND strike voltage input stake not grounded

self-test of voltage stake failed

588 EEP WRITE EEProm write error ESID may not be able to record strike history

5895 MISC CODE invalid error report entry software error report

Code Display Condition Result



Troubleshoot Strike System

When strike system detects a problem, an error icon will be displayed. Anytime this happens, press self test button to retest. If error icon is still displayed and does not appear in this chart, have control module checked or replaced.

Other problem situations and their possible causes and solutions are listed in the chart below.

Problem Possible cause Possible solution

No lights or readings showing after drilling unit key has been on at least one minute

No power to strike system control module

Check drilling unit electric system

Check that harness from drilling unit to control module is connected

Defective control module Have control module checked or replaced

LCD screen is blank Strike system is not getting adequate power from drilling unit




OK indicator is on, but electrical power supply indicator is off

Strike system is not getting adequate power from drilling unit



Check that harness from drilling unit carries more than 10V


Electrical power supply indicator is on, but OK indicator is off

Problem detected during test Check for error code and have control module checked or replaced


Strobe light on drilling unit does not work during total test

Improper connections with control module

Check connections and wiring harness

Defective strobe light 1. Disconnect strobe and connect to external 12V power source.

2. If strobe does not work, replace it.




Alarm on drilling unit does not work during total test



Defective alarm 1. Disconnect alarm and connect to external 12V power source.

2. If alarm does not work, replace it.


Strobe light and alarm on drilling unit do not work during total test




Current detection problem indicator is flashing


Check cable connections on control module and current transformer

Defective current transformer 1. Disconnect current transformer.

2. Check for 20-40 ohms from pin 1 to pin 4, 20-40 ohms from pin 1 to pin 2, and less than 1 ohm from pin 2 to pin 4.

Defective current transformer cable

1. Disconnect cable from transformer and control module.

2. Check continuity of cable.

3. If continuity is zero or cable is damaged, replace.


Voltage limiter problem indicator is flashing

Improper connection of voltage limiter to ground stake

Check voltage limiter connection to ground stake and verify that ground stake is driven into the ground

Improper connections with control module.

Check cable connection on control module.

Defective voltage limiter Have voltage limiter checked or replaced


Problem Possible cause Possible solution



Use Electric Strike Simulator

Use the Electric Strike Simulator to test voltage and current sensors on ESID. If readings are less than indicated here, replace 9V battery in simulator and retest. If readings are still less than indicated, contact

your HammerHead® dealer to have ESID repaired before drilling.

Current Test

To test for current at normal levels:

1. Thread one lead wire through current transformer.

2. Clip ends of lead wires together to make one loop.

3. Move simulator switch to "current" and press test button.

4. Watch screen and lights above display on strike system.

• Three or four lights should turn on.

• Current "A" should show 30% or higher in display.

To test for current at strike levels:

1. Put two or three loops through current transformer.

2. Follow steps above to test.

3. Display should show the following:

• All lights should turn on.

• Alarm and strobe should turn on.

With two loops,

• Current "A" should be 80% or higher.

• Strike indication might go on and off.

With three loops,

• Current should be 130% or higher.

• Strike indication should be continuous.



Voltage Test

1. Place voltage limiter on something insulated from ground and drilling unit (such as dry board or tire), but near frame of drilling unit.

2. Clip one lead to frame.

3. Clip other lead to one voltage limiter mount.

4. Move simulator switch to "voltage" and press test button.

5. Watch screen and lights above display on strike system.

• All lights should turn on.

• Alarm and strobe should turn on.

• Voltage "V" should show 90% or higher.

IMPORTANT: It is normal for simulator voltage levels to drift below 100%.





Complete the Job

Chapter Contents

Stow Components . . . . . . . . . . . . . . . . . . . . . . . . . 88

Restore Jobsite . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Stow Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Complete the Job - 87

HG375/HG375AT Operator’s ManualStow Components

Stow Components

Load unit as specified. See “Transport” on page 57 for more information.

Restore Jobsite

Fill in installation, bursting and service connection pits.

Stow Tools

Make sure all accessories and tools are loaded and properly secured on trailer.

88 - Complete the Job


Service

Chapter Contents

Service Precautions . . . . . . . . . . . . . . . . . . . . . . . . 90

• Welding Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

• Washing Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90

Recommended Lubricants/Service Key . . . . . . . . 91

• Engine Oil Temperature Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

• Approved Coolant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92

• Approved Fuel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

Each Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

50 Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

100 Hour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

200 Hour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

500 Hour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

1000 Hour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

As Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Service - 89

HG375/HG375AT Operator’s ManualService Precautions

Service Precautions

Welding Precaution

Washing Precaution



• Unless otherwise instructed, all service should be performed with engine off.

• Refer to engine manufacturer’s manual for engine maintenance instructions.

NOTICE: Welding can damage electronics.

• Welding currents can damage electronic components. Always disconnect the ECU ground connection from the frame, harness connections to the ECU, and other electronic components prior to welding on machine or attachments. Connect welder ground close to welding point and make sure no electronic components are in the ground path.

• Disconnect battery at battery disconnect switch before welding to prevent damage to battery. See “Check Battery” on page 105.

• Do not turn off battery disconnect switch with engine running, or alternator and other electronic devices may be damaged.

NOTICE: Water can damage electronics. When cleaning equipment, do not spray electrical components with water.

90 - Service

HG375/HG375AT Operator’s ManualRecommended Lubricants/Service Key

Recommended Lubricants/Service Key

Proper lubrication and maintenance protects HammerHead® equipment from damage and failure. Service intervals listed are minimum requirements. In extreme conditions, service machine more frequently. Use only recommended lubricants. Use only genuine HammerHead parts and approved lubricants to maintain warranty.

For more information on engine lubrication and maintenance, see your engine manual.

Item Description

DEO Diesel engine oil meeting or exceeding API CF, SAE 10W-30.

DEAC Low silicate, fully formulated diesel engine antifreeze/coolant meeting ASTM D6210.

HF Hydraulic fluid, Grade: Tetra 46 or equivalent meeting or exceeding ISO 45.

EPG Extreme-Pressure Grease. Use lithium based NLGI GC‐LB Grade 2, with extreme pressure additives.

MOB Open gear lube Mobitack 375 NC

Check level of fluid or lubricant

Filter Check condition

Adjust, service or test Change or replace

NOTICE: Use the “Service Record” on page 121 to record all required service to your machine.

Service - 91


Engine Oil Temperature Chart

Approved Coolant

This unit was filled with a 50/50 anti-freeze mix. Refill with 0.82 gal (3.1 L) of 50/50 mix. Add or replace only with coolant meeting this specification.

NOTICE:

• Do not use water or high-silicate automotive-type coolant. This will lead to engine damage orpremature engine failure.

• Do not mix heavy-duty diesel engine coolant and automotive-type coolants. This will lead to coolantbreakdown and engine damage.

• Use only distilled water for mixing coolants. Do not use tap water.

Temperature range anticipated before next oil change

92 - Service


Approved Fuel

U.S., Canada, EU, and Japan

This engine is designed to run on diesel fuel. Use only high quality fuel meeting ASTM D975 No. 2D, EN590, or equivalent. At temperatures below 32°F (0°C) winter fuel blends are acceptable. See the engine operation manual for more information.

Biodiesel blends up to 5% (B5) are approved for use in this unit. The fuel used must meet the specifications for diesel fuel shown above. In certain markets, higher blends may be used if certain steps are taken. Extra attention is needed when using biodiesel, especially when operating in cold weather or

storing fuel. Contact your Ditch Witch® dealer or the engine manufacturer for more information.

Less Regulated Markets (Outside the U.S., Canada, EU, and Japan)

This engine is designed to run on diesel fuel. Use only high quality fuel meeting ASTM D975 No. 2D, EN590, or equivalent. At temperatures below 32°F (0°C) winter fuel blends are acceptable. See the engine operation manual for more information.

Biodiesel blends up to 5% (B5) are approved for use in this unit. The fuel used must meet the specifications for diesel fuel shown above. In certain markets, higher blends may be used if certain steps are taken. Extra attention is needed when using biodiesel, especially when operating in cold weather or storing fuel. Contact your Ditch Witch dealer or the engine manufacturer for more information.

Avoid static electricity when fueling. Ultra Low Sulfur Diesel (ULSD) poses a greater static ignition hazard than earlier diesel formulations. Avoid death or serious injury from fire or explosion. Consult with your fuel system supplier to ensure the delivery system is in compliance with fueling standards for proper grounding and bonding practices.

NOTICE: Use only Ultra Low Sulfur Diesel (less than 15ppm sulfur content in US and Canada or 10 mg/kg sulfur content in Japan) in this unit. Operating with higher sulfur content will increase emissions and violate regulations.

IMPORTANT: Fuel sulfur content should be less than 10,000 ppm (10,000 mg/kg). Worldwide, fuel sulfur regulations vary widely. Fuel used should always comply with local regulations. Prior to shipping, this unit was filled with API CJ-4 DEO. If operating fuel with sulfur content above 500 ppm (500 mg/kg), change oil initially at 50 hours.

Service - 93

HG375/HG375AT Operator’s ManualEach Use

Each Use

Check Engine Oil Level

With unit on level surface, check engine oil at dipstick (2) before startup and every 10 hours of operation. Add DEO at fill (1) as necessary to keep oil level at highest line on dipstick.

Task Notes

Check engine oil level DEO

Check engine coolant level DEAC

Check hydraulic fluid level HF

Check tire pressure and lug nut torque Wheeled unit, 90 ft•lb (122 N•m)

Check fuel level and refuel

Grease level wind follower and level wind shaft bearings

EPG

Grease level wind shaft EPG

Grease bull wheel bearing EPG

Check track tension and condition Tracked unit, EPG

Grease take up drum bearings EPG

Inspect wire cable

Clean dust ejector valve

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94 - Service


Check Engine Coolant Level

With engine cool and unit on level surface, check coolant level at fill before startup and every 10 hours of operation. Add DEAC to maintain coolant level at halfway to the bottom of the fill pipe (shown).

Check Hydraulic Fluid Level

Check hydraulic oil level before startup and every 10 hours of operation. Maintain fluid level at halfway point on sight glass (shown), when unit is on level ground, engine is off, and fluid is cool. If low, add HF.

Contents under pressure. Relieve pressure before opening. Death or injury could occur.


• Do not remove the pressure cap from a hot engine.

• Wait until the coolant temperature is below 122°F (50°C) before removing pressure cap.

• Do not stand near or over the expansion tank while operating the engine with the pressure cap off.

IMPORTANT: See “Recommended Lubricants/Service Key” on page 91 for information on approved coolants.

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Service - 95


Check Tire Pressure and Lug Nut Torque (Wheeled Unit)

Check tire pressure and lug nut torque before start up and every 10 hours of operation. See below for correct pressure and torque.

Check Fuel Level and Refuel

Check fuel level before start up and every 10 hours of operation. Fill fuel tank with approved fuel at the end of each day to prevent condensation. Do not fill to the top, allow room for expansion.

Pressure Torque

75 psi (5.1 bar) 90 ft•lb (122 N•m)

Fuel and its vapors are extremely flammable. Fire or

explosion can cause death or serious injury.


• Keep heat, sparks, flames and other ignitionsources away.

• Refuel only outdoors.

• Wipe up spilled fuel immediately.

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96 - Service


Grease Level Wind Follower and Level Wind Shaft Bearings

Grease level wind follower and level wind shaft bearings (shown) before startup and every 10 hours of operation with EPG.

Grease Level Wind Shaft

Grease level wind shafts before startup and every 10 hours of operation with EPG.

Grease Bull Wheel Bearings

Grease bull wheel bearings before startup and every 10 hours of operation with EPG.

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Service - 97


Check Track Tension and Condition (Tracked Unit)

Check track tension and adjust or replace before startup and every 10 hours of operation.

To adjust:

1. Lift right track using right stabilizer.

2. Remove cover (1).

3. Place straightedge across front track span from idler to sprocket as shown.

4. Pump EPG into fitting (2) until distance between top edge of bottom of track and straightedge (A) is 1-1/2” to 2” (37.5-50 mm).

5. Lower stabilizer.

6. Drive straight forward one machine length and check tension again.

7. Repeat the process for the left track.

Grease Take Up Drum Bearings

Grease take up drum bearings before startup and every 10 hours of operation with EPG.

Inspect Wire Cable

Inspect wire cable before each use. Replace damaged wire cable immediately. Obvious damage includes permanent bends, flat spots, worn spots, broken wires, frays, rust, and corrosion. For more information see “Wire Cable” on page 77.

IMPORTANT: Raise enough to allow the track to hang freely from the machine.

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98 - Service


Clean Dust Ejector Valve

Check dust ejector valve (shown) before startup and every 10 hours of operation. Ensure that valve is not inverted, damaged, plugged, or cracked.

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Service - 99

HG375/HG375AT Operator’s Manual50 Hour

50 Hour

Change Engine Oil and Filter (Initial Service)

Change engine oil and filter after first 50 hours of operation, and every 100 hours thereafter.

To change:

1. While oil is warm, remove drain plug (3). Drainoil and replace plug.

2. Remove filter (1) and replace with new filtereach time oil is changed.

3. Add DEO at fill (2) until oil level is at highestcapacity on dipstick.

Clean Air Filter

Clean air filter every 50 hours.

To change:

1. Remove air filter cover (3).

2. Remove and clean filter element (2). Replace ifneeded. See “Change Air Filter” on page 112.

3. Wipe inside of housing (1) and wash cover.

4. Replace filter element and ensure it is seatedcorrectly.

5. Clean dust ejector valve (4).

6. Replace cover. If cover does not fit, filterelement is not properly locked into housing. Remove cover and element and repeat step 4.

Task Notes

Change engine oil and filter Initial service, DEO

Clean air filter

Check fuel lines

Grease bull wheel sprockets MOB

Check hydraulic hoses

Grease mast pivots EPG

Grease mast cable sheave bearing EPG

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2

3

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100 - Service


Check Fuel Lines

Check fuel lines after 50 hours for wear or cracks. Check fuel line for loose or broken clamp bands.

Grease Bull Wheel Sprockets

Grease the bull wheel sprockets every 50 hours with MOB.

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Service - 101


Check Hydraulic Hoses

Check hydraulic hoses for leaks every 50 hours of

operation. .

Pressurized fluid or air could pierce skin and cause severe injury. Refer to operator’s manual for proper use.


• Use a piece of cardboard or wood, rather than hands, to search for leaks.

• Wear protective clothing, including gloves and eye protection.

• Before disconnecting a hydraulic line, turn engine off and operate all controls to relieve pressure.

• Lower, block, or support any raised component with a hoist.

• Cover connection with heavy cloth and loosen connector nut slightly to relieve residual pressure.Catch all fluid in a container.

• Before using system, check that all connections are tight and all lines are undamaged.

• If you are injured, seek immediate medical attention from a doctor familiar with this type of injury.

102 - Service


Grease Mast Pivots

Grease mast pivots (shown) every 50 hours with EPG.

Grease Mast Cable Sheave Bearing

Grease mast cable sheave bearing (shown) every 50 hours with EPG.

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Service - 103


100 Hour

Change Engine Oil and Filter

Change engine oil and filter every 100 hours.

To change:

1. While oil is warm, remove drain plug (3). Drainoil and replace plug.

2. Remove filter (1) and replace with new filtereach time oil is changed.

3. Add DEO at fill (2) until oil level is at highestcapacity on dipstick.

Check Fan Belt

Check alternator fan belt tension every 100 hours.

1. Apply pressure to fan belt (2) between pulleys.Belt should move between 0.28-0.35” (7-9mm) when pressed.

2. If the belt is outside of normal tension adjustalternator arm (1) until belt is within normallimits.

3. Replace fan belt if damaged.

Task Notes

Change engine oil and filter DEO

Check fan belt

Check battery

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104 - Service


Check Battery

Check battery electrolyte level and clean terminals

every 100 hours.

1. Turn battery disconnect to the OFF position.

2. Ensure that no ignition sources are nearbatteries.

3. Loosen and remove battery cable clampscarefully, negative (-) cable first.

4. Clean cable clamps and terminals to removedull glaze.

5. Check for signs of internal corrosion in cables.

6. Remove cell caps.

7. Fill each cell with distilled water, replace cellcaps.

8. Connect battery cable clamps, positive (+) cable first.

9. Tighten any loose connections.

10. Ensure that battery tiedowns are secure.

11. Turn battery disconnect to the ON position.



• Wear safety glasses and face shield and rubber gloves.

• Use flashlight to check electrolyte level.

• Work in a well-ventilated area.

• Avoid breathing fumes from battery, and avoid contact with skin, eyes, or clothing.

• Keep flames and sparks away.

• Keep out of reach of children.

• Do not short across battery terminals or allow tools to short from battery terminals to frame.

• Do not jump-start or charge a battery with frozen electrolyte.

NOTICE: In freezing weather, run the engine immediately after filling battery to allow water andelectrolyte to mix.

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Service - 105


200 Hour

Change Hydraulic Fluid Filter

Change hydraulic fluid filter every 200 hours or as indicated by the hydraulic fluid filter restriction indicator. See “Hydraulic fluid filter restriction indicator” on page 30.

To change:

1. Turn filter (shown) counterclockwise toremove.

2. Clean filter head surface.

3. Apply thin film of oil to gasket of new filter.

4. Install filter, turning clockwise by hand untilfilter head contacts the filter head surface.

5. Start engine and cycle control levers to pressurize system.

6. Stop engine, check hydraulic fluid level, and check for leaks around filter.

Change Fuel Filter

Change fuel filter every 200 hours.

1. Close fuel shutoff valve (1).

2. Replace fuel filter (2).

3. Open fuel shutoff valve.

Task Notes

Change hydraulic fluid filter

Change fuel filter

Add cooling system additive

NOTICE: Tighten filter only enough to stop leaks.

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106 - Service


Add Cooling System Additive

Add cooling system additive to radiator (shown) every 200 hours. Capacity is 0.8 oz (24 cc).

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Service - 107


500 Hour

Adjust Brakes (Wheeled Units)

Adjust brakes every 500 hours.

1. Place adequate jack stands under frame andremove wheels.

2. Remove cover from adjusting slot (1) onbottom of backing plate.

3. Rotate adjuster starwheel with screwdriver orbrake spoon to expand brake shoes (2). Adjustuntil drum is very difficult to turn by hand.

4. Rotate starwheel the other direction until drumturns with slight drag.

5. Replace adjusting slot cover and replacewheel.

6. Repeat procedure for all remaining brakes.

7. Remove jack stands and lower wheels to ground.

Change Fan Belt

Change alternator fan belt every 500 hours.

1. Loosen alternator arm (1) to remove fan belt(2).

2. Install new fan belt.

3. Adjust alternator arm until movement betweenthe pulleys is between 0.28-0.35” (7-9 mm)when pressed.

Task Notes

Adjust brakes Wheeled units

Change fan belt

Change engine coolant DEAC

1

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108 - Service


Change Engine Coolant

Drain and clean cooling system every year or 1000 hours.

To change:

1. Remove drain plug (1) and drain old coolant.

2. Fill radiator with clean water at fill (2).

3. Check for signs of rust and add cooling systemcleaner to the water if necessary.

4. Run engine long enough to ensure thermostathas opened.

5. Let system cool, drain water.

6. Add DEAC at fill. Do not fill to the top.

7. Run engine until mixture has circulated in the system.

8. Add 3.25 oz (97 cc) of Fleetguard DCA4.

9. Finish filling with DEAC.

NOTICE: For approved coolant, see “Recommended Lubricants/Service Key” on page 91.

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Service - 109


1000 Hour

Change Hydraulic Fluid

Change hydraulic fluid every 1000 hours.

To change:

1. Remove cap (1) and drain plug (3) while fluid iswarm and drain.

2. Clean, inspect, and reinstall drain plug.

3. Change hydraulic fluid filter. See “ChangeHydraulic Fluid Filter” on page 106.

4. Add HF at fill (1) until level is at halfway pointon sight glass (2).

5. Operate hydraulic system.

6. Follow shutdown procedure and recheck oil level.

Task Notes

Change hydraulic fluid HF

Check wheel bearings Wheeled units, EPG

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2

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110 - Service


Adjust and Lubricate Bearings (Wheeled Units)

Adjust and lubricate bearings every 1000 hours.

1. Place adequate jack stands under frame railsand remove wheels.

2. Unscrew grease cap (1) while holding the hubstationary.

3. Remove cotter pin (2).

4. Remove castellated nut (3) and spindlewasher (4).

5. Remove hub (5) from spindle. Do not dropouter bearing.

6. Remove inner bearing (8) and pry seal (7) from hub.

7. Inspect brake drum for excessive wear or heavy scoring.

8. Clean all grease from bearing cups (9), bearings (6, 8), hardware, and hub bore using suitable solvent.Dry components with lint free cloth.

9. Inspect bearing cups and bearings for pitting, spalling, and corrosion. Replace if damaged.

10. Pack all bearings with EPG. Apply light coating of grease to bearings.

11. Reinstall seal on hub and replace inner bearing.

12. Ensure the bearings and bearing cups are seated correctly into the hub.

13. Replace hub.

14. Replace spindle washer and castellated nut.

15. Hand tighten the nut and back it off 1/4 to 3/4 of a turn.

16. Replace cotter pin.

17. Replace grease cap.

18. Rotate the hub and check bearing adjustment. Allowable end play is 0.001-0.010” (0.025-0.25 mm).

Condition Recommended Action

Brake drum worn more than 0.020” (.5 mm). Remachine drum surface

Brake drum worn out of round more than 0.015” (0.39 mm).

Brake drum has scoring and other wear greater than 0.090” (2.29 mm) Replace drum

1

2

34

5

6

78

9

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HG375/HG375AT Operator’s ManualAs Needed

As Needed

Change Air Filter

Change air filter as needed.

To change:

1. Remove air filter cover (3).

2. Remove filter element (2).

3. Wipe inside of housing (1) and wash cover.

4. Replace filter element and ensure it is seatedcorrectly.

5. Clean dust ejector valve (4).

6. Replace cover. If cover does not fit, filterelement is not properly locked into housing.Remove cover and element and repeat step 4.

Task Notes

Change air filter

Change battery

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3

24

112 - Service


Change Battery

Change battery as needed.

1. Ensure that no ignition sources are nearbattery.

2. Loosen and remove battery cable clampscarefully, negative (-) cable first.

3. Remove battery.

4. Install new battery.

5. Connect battery cable clamps, positive (+)cable first.

6. Tighten any loose connections.

7. Ensure that battery tiedowns are secure.



• Use a single 12V maximum source for charging. Do not connect to rapid chargers or dual batteries.

• Use caution and wear personal protective equipment such as safety eyewear, when charging orcleaning battery.

• Keep sparks, flames, and any ignition source away from batteries at all times. Internal contents areextremely hazardous. Leaking fluid is corrosive. Battery may be explosive at higher temperatures.

• NEVER lean over battery when making connections.

• Do not allow vehicles to touch when charging.

• Do not attempt to charge a battery that is leaking, bulging, heavily corroded, frozen, or otherwisedamaged.

• NEVER short-circuit battery terminals for any reason or strike battery posts or cable terminals.

• Refer to MSDS for additional information regarding this battery.

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114 - Service

HG375/HG375AT Operator’s ManualWinch Unit

Specifications

Winch Unit

Dimensions U.S. Metric

L, length (with trailer tongue) 10.2 ft 3.1 m

W, width 5.8 ft 1.8 m

H1, height 4.3 ft 1.3 m

H2, boom height 9.7 ft 3.0 m

H3, boom length in ground

Slitting lower unit (SLU) 5.0 ft 1.5 m

10’ mast option 10.0 ft 3.0 m

Weight (wheeled unit, without cable) 2400 lb 1089 kg

LL

H1H1

H2H2

H3H3

WW

Specifications - 115

HG375/HG375AT Operator’s ManualWinch Unit

Operational U.S. Metric

Pullback force, maximum 3.8 tons 3.5 tonnes

Working pressure, maximum 3450 psi 238 bar

Working flow rate 25-27 gpm 95-102 lpm

Push cable speed, maximum 193 ft/min 59 m/min

Pullback cable speed, maximum 153 ft/m 47 m/min

Power U.S. Metric

Engine: Kubota 902

Fuel: diesel

Cooling medium: liquid

Trailer Unit U.S. Metric

Tire

225/75R15, D 50 psi 3.4 bar

Load rating

Should not exceed 5080 lbs 2304 kg

Load ratings for speeds up to 65 mph (104 km/h).

116 - Specifications

HG375/HG375AT Operator’s ManualDeclaration of Conformity Information

Declaration of Conformity Information

Countries in the European Union should have received a Declaration of Conformity (DOC) with this machine similar to the example below.

Earth Tool Company, LLC. 500 South C.P. AvenueLake Mills, Wisconsin, 53545Phone: 920 648 4848FAX: 920 648 1780

Declares that the product:

Model: HammerHead® XXXX

Type: (machine type)

Engine Power: xxx kW

Serial Number: (model) XXXXX

Conforms to the requirements of:

2006/42/EC Machinery Directive

2014/30/EU Electromagnetic Compatibility Directive

2000/14/EC Noise Emission Directive

Measured sound power level (Annex V): xxx dBA Guaranteed sound power level (Annex V): xxx dBA

The Technical Construction File is maintained at the manufacturer’s location.

The manufacturer’s European representative is:

Ditch Witch BarcelonaInternational Underground Systems, S.L.C/EL PLA, 130 * Poligon Industrial El Pla08980 Sant Feliu De Llobregat * SpainPhone: +34 93 632 7344FAX: +34 93 632 7343

Specifications - 117

HG375/HG375AT Operator’s ManualDeclaration of Conformity Information

118 - Specifications

HG375/HG375AT Operator’s Manual Procedure

Support

Procedure

Notify your dealer immediately of any malfunction or failure of HammerHead® equipment.

Always give model, serial number, and approximate date of your equipment purchase. This information should be recorded and placed on file by the owner at the time of purchase.

Return damaged parts to dealer for inspection and warranty consideration if in warranty time frame.

Order genuine HammerHead replacement or repair parts from your authorized HammerHead dealer. Use of another manufacturer's parts may void warranty consideration.

Resources

Publications

Contact your HammerHead dealer for publications and videos covering safety, operation, service, and repair of your equipment.

HammerHead Training

For information about on-site, individualized training, contact your HammerHead dealer.

Support - 119

HG375/HG375AT Operator’s Manual Resources

Warranty

Two (2) Year Limited Warranty Policy

LIMITED WARRANTY. EARTH TOOL COMPANY LLC, hereinafter sometimes referred to as ETC warrants each new HammerHead® Mole 2” to 5 ¾” (50 to 145 mm) industrial of its own manufacture to be free from defects in material and workmanship, under normal use and service for two full years after delivery to the owner.

During the warranty period, the authorized selling HammerHead Dealer shall furnish parts without charge, that fail because of defects in material and workmanship. Warranty is void unless warranty registration card is returned within ten days from the date of purchase. This warranty and any possible liability of Earth Tool Company LLC hereunder is in lieu of all other warranties, express, implied, or statutory, including, but not limited to, any warranties of merchantability or fitness for a particular purpose.

The parties agree that the Buyer's SOLE AND EXCLUSIVE REMEDY against ETC, whether in contract or arising out of warranties, representations, instructions, or defects shall be for the replacement or repair of defective parts as provided herein. In no event shall ETC's liability exceed the purchase price of the product. The Buyer agrees that no other remedy (including, but not limited to, incidental or consequential loss) shall be available to him. If, during the warranty period, any product becomes defective by reason of material or workmanship and Buyer immediately notifies ETC of such defect, ETC shall, at its option, supply a replacement part or request return of the product to its plant in Lake Mills, Wisconsin.

No parts shall be returned without prior written authorization from ETC, and this Warranty does not obligate ETC to bear any transportation charges in connection with the repair or replacement of defective parts. Earth Tool Company LLC will not accept any charges for labor and/or parts incidental to the removal or remounting of parts repaired or replaced under this Warranty.

This Warranty shall not apply to any part or product which shall have been installed or operated in a manner not recommended by ETC nor to any part or product which shall have been neglected, or used in any way which, in ETC's opinion, adversely affects its performance; nor negligence of proper maintenance or other negligence, fire or other accident; nor with respect to wear items; nor if the unit has been altered or repaired outside of a ETC authorized dealership in a manner of which, in the sole judgment of ETC affects its performance, stability or reliability; nor with respect to batteries which are covered under a separate adjustment warranty; nor to any product in which parts not manufactured or approved by ETC have been used, nor to normal maintenance services or replacement of normal service items.

Equipment and accessories not of our manufacture are warranted only to the extent of the original Manufacturer's Warranty and subject to their allowance to us, if found defective by them. ETC reserves the right to modify, alter, and improve any product or parts without incurring any obligation to replace any product or parts previously sold with such modified, altered, or improved product or part. No person is authorized to give any other Warranty, or to assume any additional obligation on ETC's behalf unless made in writing, and signed by an officer of ETC.

EARTH TOOL COMPANY LLC

Lake Mills, Wisconsin

120 - Warranty


Service Record

Service Performed Date Hours

Service Record - 121


Service Performed Date Hours

122 - Service Record

HG375/HG375AT Operator’s Manual Appendix - 123

Appendix

Chapter Contents

Tire Safety Information

TIRE SAFETY INFORMATION 1.1. STEPS FOR DETERMINING CORRECT LOAD LIMIT – TRAILER Determining the load limits of a trailer includes more than understanding the load limits of the tires alone. On all trailers there is a Federal certification/VIN label that is located on the forward half of the left (road) side of the unit. This certification/VIN label will indicate the trailer’s Gross Vehicle Weight Rating (GVWR). This is the most the fully loaded trailer can weigh. It will also provide the Gross Axle Weight Rating (GAWR). This is the most a particular axle can weigh. If there are multiple axles, the GAWR of each axle will be provided. If your trailer has a GVWR of 10,000 pounds or less, there is a vehicle placard located in the same location as the certification label described above. This placard provides tire and loading information. In addition, this placard will show a statement regarding maximum cargo capacity. Cargo can be added to the trailer, up to the maximum weight specified on the placard. The combined weight of the cargo is provided as a single number. In any case, remember: the total weight of a fully loaded trailer can not exceed the stated GVWR. When loading your cargo, be sure it is distributed evenly to prevent overloading front to back and side to side. Heavy items should be placed low and as close to the axle positions as reasonable. Too many items on one side may overload a tire. The best way to know the actual weight of the trailer is to weigh it at a public scale. Talk to your dealer to discuss the weighing methods needed to capture the various weights related to the trailer. This would include the weight empty or unloaded, weights per axle, wheel, hitch or king-pin, and total weight. Excessive loads and/or underinflation cause tire overloading and, as a result, abnormal tire flexing occurs. This situation can generate an excessive amount of heat within the tire. Excessive heat may lead to tire failure. It is the air pressure that enables a tire to support the load, so proper inflation is critical. The proper air pressure may be found on the certification/VIN label and/or on the Tire Placard. This value should never exceed the maximum cold inflation pressure stamped on the tire. 1.1.1. TRAILERS 10,000 POUNDS GVWR OR LESS

Tire and Loading Information Placard – Figure 1-1

1. Locate the statement, “The weight of cargo should never exceed XXX kg or XXX lbs.,” on

your trailer’s placard. See figure 1-1. 2. This figure equals the available amount of cargo load capacity. 3. Determine the combined weight of cargo being loaded on the trailer. That weight may not

safely exceed the available cargo load capacity.

The Tire Information Placard is attached adjacent to or near the trailer’s VIN (Certification) label at the left front of the trailer. 1.1.2. TRAILERS OVER 10,000 POUNDS GVWR (NOTE: These trailers are not required to have a tire information placard on the trailer.)

1. Determine the empty weight of your trailer by weighing the trailer using a public scale or other means. This step does not have to be repeated.

2. Locate the GVWR (Gross Vehicle Weight Rating) of the trailer on your trailer’s VIN (Certification) label.

3. Subtract the empty weight of your trailer from the GVWR stated on the VIN label. That weight is the maximum available cargo capacity of the trailer and must not be exceeded.

1.2. STEPS FOR DETERMINING CORRECT LOAD LIMIT – TOW VEHICLE

1. Locate the statement, “The combined weight of occupants and cargo should never exceed XXX lbs.,” on your vehicle’s placard.

2. Determine the combined weight of the driver and passengers who will be riding in your vehicle.

3. Subtract the combined weight of the driver and passengers from XXX kilograms or XXX pounds.

4. The resulting figure equals the available amount of cargo capacity. For example, if the “XXX” amount equals 1400 lbs. and there will be five 150 lb. passengers in your vehicle, the amount of available cargo and luggage capacity is 650 lbs. (1400-750 (5 x 150) = 650 lbs.).

5. Determine the combined weight of cargo being loaded on the vehicle. That weight must not exceed the available cargo capacity calculated in Step # 4.

6. If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult the tow vehicle’s manual to determine how this weight transfer reduces the available cargo and luggage capacity of your vehicle.

1.3. GLOSSARY OF TIRE TERMINOLOGY

Bead - the part of the tire that is made of steel wires, wrapped or reinforced by ply cords and that is shaped to fit the rim. Bead separation - the breakdown of the bond between components in the bead. Bias ply tire - a pneumatic tire in which the ply cords that extend to the beads are laid at alternate angles substantially less than 90 degrees to the centerline of the tread. Carcass - the tire structure, except tread and sidewall rubber which, when inflated, bears the load. Chunking - the breaking away of pieces of the tread or sidewall. Cold inflation pressure - the pressure in the tire before you drive. Cord - the strands forming the plies in the tire. Cord separation - the parting of cords from adjacent rubber compounds. Cracking - any parting within the tread, sidewall, or inner liner of the tire extending to cord material. Curb weight - the weight of a vehicle with standard equipment. Groove - the space between two adjacent tread ribs. Gross Axle Weight Rating (GAWR) - the maximum weight that any axle can support, as published on the Certification / VIN label on the front left side of the trailer. Actual weight determined by weighing each axle on a public scale, with the trailer attached to the towing vehicle. Gross Vehicle Weight Rating (GVWR) - the maximum weight of the fully loaded trailer, as published on the Certification / VIN label. Actual weight determined by weighing trailer on a public scale, without being attached to the towing vehicle. Tongue Weight - the downward force exerted on the hitch ball or lunette by the trailer coupler. Innerliner - the layer(s) forming the inside surface of a tubeless tire that contains the inflating medium within the tire.

Innerliner separation - the parting of the innerliner from cord material in the carcass. Light truck (LT) tire - a tire designated by its manufacturer as primarily intended for use on lightweight trucks or multipurpose passenger vehicles. Load rating - the maximum load that a tire is rated to carry for a given inflation pressure. Maximum load rating - the load rating for a tire at the maximum permissible inflation pressure for that tire. Maximum permissible inflation pressure - the maximum cold inflation pressure to which a tire may be inflated. Maximum loaded vehicle weight - the sum of curb weight, accessory weight, vehicle capacity weight, and production options weight. Outer diameter - the overall diameter of an inflated new tire. Overall width - the linear distance between the exteriors of the sidewalls of an inflated tire, including elevations due to labeling, decorations, or protective bands or ribs. Ply - a layer of rubber-coated parallel cords. Ply separation - a parting of rubber compound between adjacent plies. Pneumatic tire - a mechanical device made of rubber, chemicals, fabric and steel or other materials, that, when mounted on an automotive wheel, provides the traction and contains the gas or fluid that sustains the load. Radial ply tire - a pneumatic tire in which the ply cords that extend to the beads are laid at substantially 90 degrees to the centerline of the tread. Recommended inflation pressure - the inflation pressure provided by the vehicle manufacturer on the Tire Information label and on the Certification / VIN tag. Rim - a metal support for a tire or a tire and tube assembly upon which the tire beads are seated. Rim diameter - the nominal diameter of the bead seat. Rim size designation - the rim diameter and width. Rim type designation - the industry of manufacturer’s designation for a rim by style or code. Rim width - the nominal distance between rim flanges. Sidewall - that portion of a tire between the tread and bead. Sidewall separation - the parting of the rubber compound from the cord material in the sidewall. Special Trailer (ST) tire - the "ST" is an indication the tire is for trailer use only. Tread - that portion of a tire that comes into contact with the road. Tread rib - a tread section running circumferentially around a tire. Tread separation - pulling away of the tread from the tire carcass. Treadwear indicators (TWI) - the projections within the principal grooves designed to give a visual indication of the degrees of wear of the tread. Vehicle maximum load on the tire - the load on an individual tire that is determined by distributing to each axle its share of the maximum loaded vehicle weight and dividing by two. Vehicle normal load on the tire - the load on an individual tire that is determined by distributing to each axle its share of the curb weight and dividing by 2.

1.4. TIRE SAFETY - EVERYTHING RIDES ON IT The National Traffic Safety Administration (NHTSA) has published a brochure (DOT HS 809 361) that discusses all aspects of Tire Safety, as required by CFR 575.6. This brochure is reproduced in part below. It can be obtained and downloaded from NHTSA, free of charge, from the following web site: http://www.nhtsa.dot.gov/cars/rules/TireSafety/ridesonit/tires_index.html Studies of tire safety show that maintaining proper tire pressure, observing tire and trailer load limits (not carrying more weight in your trailer than your tires or trailer can safely handle), avoiding road hazards, and inspecting tires for cuts, slashes, and other irregularities are the most important things you can do to avoid tire failure, such as tread separation or blowout and flat tires. These actions, along with other care and maintenance activities, can also:

◊ Improve vehicle handling ◊ Help protect you and others from avoidable breakdowns and accidents ◊ Improve fuel economy ◊ Increase the life of your tires.

This booklet presents a comprehensive overview of tire safety, including information on the following topics:

◊ Basic tire maintenance ◊ Uniform Tire Quality Grading System ◊ Fundamental characteristics of tires ◊ Tire safety tips.

Use this information to make tire safety a regular part of your trailer maintenance routine. Recognize that the time you spend is minimal compared with the inconvenience and safety consequences of a flat tire or other tire failure. 1.5. SAFETY FIRST–BASIC TIRE MAINTENANCE Properly maintained tires improve the steering, stopping, traction, and load-carrying capability of your trailer. Underinflated tires and overloaded vehicles are a major cause of tire failure. Therefore, as mentioned above, to avoid flat tires and other types of tire failure, you should maintain proper tire pressure, observe tire and trailer load limits, avoid road hazards, and regularly inspect your tires. 1.5.1. FINDING YOUR TRAILER'S RECOMMENDED TIRE PRESSURE AND LOAD LIMITS Tire information placards and vehicle certification labels contain information on tires and load limits. These labels indicate the vehicle manufacturer's information including:

◊ Recommended tire size ◊ Recommended tire inflation pressure ◊ Vehicle capacity weight ◊ Front and rear gross axle weight ratings

Both placards and certification labels are permanently attached to the trailer near the left front.

1.5.2. UNDERSTANDING TIRE PRESSURE AND LOAD LIMITS Tire inflation pressure is the level of air in the tire that provides it with load-carrying capacity and affects the overall performance of the trailer. The tire inflation pressure is a number that indicates the amount of air pressure– measured in pounds per square inch (psi) or kilopascals (kpa) –a tire requires to be properly inflated. This number based on the trailer's design load limit, that is, the greatest amount of weight a trailer can safely carry and the tire size. The proper tire pressure for your trailer is referred to as the "recommended cold inflation pressure." (As you will read below, it is difficult to obtain the recommended tire pressure if your tires are not cold.) Because tires are designed to be used on more than one type of vehicle, tire manufacturers list the "maximum permissible inflation pressure" on the tire sidewall. This number is the greatest amount of air pressure that should ever be put in the tire under normal driving conditions. 1.5.3. CHECKING TIRE PRESSURE It is important to check your trailer's tire pressure at least once a month for the following reasons:

◊ Most tires may naturally lose air over time. ◊ Tires can lose air suddenly if you drive over a pothole or other object or if you strike the

curb when parking. ◊ With radial tires, it is usually not possible to determine underinflation by visual inspection.

For convenience, purchase a tire pressure gauge to keep with your trailer. Gauges can be purchased at tire dealerships, auto supply stores, and other retail outlets. The recommended tire inflation pressure that manufacturers provide reflects the proper psi when a tire is cold. The term cold does not relate to the outside temperature. Rather, a cold tire is one that has not been driven on for at least three hours. When you drive, your tires get warmer, causing the air pressure within them to increase. Therefore, to get an accurate tire pressure reading, you must measure tire pressure when the tires are cold or compensate for the extra pressure in warm tires. 1.5.4. STEPS FOR MAINTAINING PROPER TIRE PRESSURE

Step 1: Locate the recommended tire pressure on the trailer's tire information placard, certification label, or in the owner's manual. Step 2: Record the tire pressure of all tires. Step 3: If the tire pressure is too high in any of the tires, slowly release air by gently pressing on the tire valve stem with the edge of your tire gauge until you get to the correct pressure. Step 4: If the tire pressure is too low, note the difference between the measured tire pressure and the correct tire pressure. These "missing" pounds of pressure are what you will need to add. Step 5: Add the missing pounds of air pressure to each tire that is underinflated. Step 6: Check all the tires to make sure they have the same air pressure (except in cases in which the front and rear tires are supposed to have different amounts of pressure).

If you have been towing your trailer and think that a tire is underinflated, fill it to the recommended cold inflation pressure indicated on your trailer's tire information placard or certification label. While your tire may still be slightly underinflated due to the extra pounds of pressure in the warm tire, it is safer to drive with air pressure that is slightly lower than the recommended cold inflation pressure than to drive with a significantly underinflated tire. Since this is a temporary fix, don't forget to recheck and adjust the tire's pressure when you can obtain a cold reading.

1.5.5. TIRE SIZE To maintain tire safety, purchase new tires that are the same size as the trailer's original tires or another size recommended by the manufacturer. Look at the tire information placard, the owner's manual, or the sidewall of the tire you are replacing to find this information. If you have any doubt about the correct size to choose, consult with your dealer. 1.5.6. TIRE TREAD The tire tread provides the gripping action and traction that prevent your trailer from slipping or sliding, especially when the road is wet or icy. In general, tires are not safe and should be replaced when the tread is worn down to 1/16 of an inch. Tires have built-in treadwear indicators that let you know when it is time to replace your tires. These indicators are raised sections spaced intermittently in the bottom of the tread grooves. When they appear "even" with the outside of the tread, it is time to replace your tires. Another method for checking tread depth is to place a penny in the tread with Lincoln's head upside down and facing you. If you can see the top of Lincoln's head, you are ready for new tires. 1.5.7. TIRE BALANCE AND WHEEL ALIGNMENT To avoid vibration or shaking of the trailer when a tire rotates, the tire must be properly balanced. This balance is achieved by positioning weights on the wheel to counterbalance heavy spots on the wheel-and-tire assembly. A wheel alignment adjusts the angles of the wheels so that they are positioned correctly relative to the trailer's frame. This adjustment maximizes the life of your tires. These adjustments require special equipment and should be performed by a qualified technician. 1.5.8. TIRE REPAIR The proper repair of a punctured tire requires a plug for the hole and a patch for the area inside the tire that surrounds the puncture hole. Punctures through the tread can be repaired if they are not too large, but punctures to the sidewall should not be repaired. Tires must be removed from the rim to be properly inspected before being plugged and patched. 1.5.9. TIRE FUNDAMENTALS Federal law requires tire manufacturers to place standardized information on the sidewall of all tires. This information identifies and describes the fundamental characteristics of the tire and also provides a tire identification number for safety standard certification and in case of a recall. 1.5.9.1. UTQGS Information Treadwear Number - indicates the tire's wear rate. The higher the treadwear number is, the longer it should take for the tread to wear down. For example, a tire graded 400 should last twice as long as a tire graded 200. Traction Letter - indicates a tire's ability to stop on wet pavement. A higher graded tire should allow you to stop your car on wet roads in a shorter distance than a tire with a lower grade. Traction is graded from highest to lowest as "AA","A", "B", and "C". Temperature Letter - indicates a tire's resistance to heat. The temperature grade is for a tire that is inflated properly and not overloaded. Excessive speed, underinflation or excessive loading, either separately or in combination, can cause heat build-up and possible tire failure. From highest to lowest, a tire's resistance to heat is graded as "A", "B", or "C".

1.5.9.2. Information on Light Truck Tires Please refer to the diagram below.

Tires for light trucks have other markings besides those found on the sidewalls of passenger tires. LT - indicates the tire is for light trucks or trailers. ST - indicates the tire is for trailer use only. Max. Load Dual kg (lbs) at kPa (psi) Cold - indicates the maximum load and tire pressure when the tire is used as a dual, that is, when four tires are put on each axle. Max. Load Single kg (lbs) at kPa (psi) Cold - indicates the maximum load and tire pressure when the tire is used as a single. Load Range - identifies the tire's load-carrying capabilities and its inflation limits. 1.6. TIRE SAFETY TIPS Preventing Tire Damage

◊ Slow down if you have to go over a pothole or other object in the road. ◊ Do not run over curbs or other foreign objects in the roadway, and try not to strike the

curb when parking. Tire Safety Checklist

◊ Check tire pressure regularly (at least once a month), including the spare (if equipped). ◊ Inspect tires for uneven wear patterns on the tread, cracks, foreign objects, or other signs

of wear or trauma. ◊ Remove bits of glass and foreign objects wedged in the tread. ◊ Make sure your tire valves have valve caps. ◊ Check tire pressure before going on a long trip. ◊ Do not overload your trailer. Check the Tire Information and Loading Placard or Owner’s

Manual for the maximum recommended load for the trailer.

Documents

TECHNICAL PUBLICATIONS - Hammerhead …...HG375/HG375AT Operator’s Manual Intended Use Overview - 3 Intended Use HammerHead® winches are intended for pedestrian controlled pipe